An air cushion that allows for easy balance training simply by placing it on your usual chair and sitting on it. It naturally improves your posture and engages your core. It also reduces fatigue from sitting, such as during work-from-home situations. Furthermore, it can be used as a training item, such as by standing on the cushion to maintain balance. Material: Inner material: PVC (air pump included) Outer cover: Polyester (cover can be hand-washed) Country of origin: China Size: Approximately 330mm (diameter) x approximately 80mm (height when inflated) Weight: Approximately 1kg Color: Smoky Olive Accessories are not included. Only the cushion is sold. Please understand.